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United States Patent | 5,617,250 |
Hacker ,   et al. | April 1, 1997 |
An arrangement is produced for protection against harmful effects of radiation and for indicating such radiation which can preferably be designed as a viewing window or as goggles and can be used for protecting the eyes from injury due to high-intensity electromagnetic radiation. It includes a transparent substrate and a sequence of thin optical layers which are applied to this substrate and are arranged according to the principle of an optical thin-film resonance absorber system.
Inventors: | Hacker; Erik (Jena, DE); Pohlack; Hubert (Jena, DE) |
Assignee: | Jenoptik GmbH (Jena, DE) |
Appl. No.: | 196077 |
Filed: | February 15, 1994 |
PCT Filed: | June 28, 1993 |
PCT NO: | PCT/EP93/01647 |
371 Date: | February 15, 1994 |
102(e) Date: | February 15, 1994 |
PCT PUB.NO.: | WO94/01793 |
PCT PUB. Date: | January 20, 1994 |
Jul 01, 1992[DE] | 42 21 523.4 |
Current U.S. Class: | 359/582; 250/474.1; 250/482.1; 359/584; 359/585; 359/590; 359/885; 359/887 |
Intern'l Class: | G02B 001/10 |
Field of Search: | 359/585,590,582,584,885,887,889,900 351/44 2/432 250/474.1,482.1,487.1,488.1 |
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H. K. Pulker, "Laser Protection Filters for .lambda.=633, 694 and 1060 nm", Thin Solid Films, 13, No. 2, 15 Nov. 1972, pp. 291-298. N.A. Borisevich et al., "Infrared Filters," NASA Report No. TT F-814 Aug. 1974 pp. 206-208. R.N. Singh et al, "Antilaser Filter for CW 6328.ANG. He-Ne Laser", Indian Journal of Pure & Applied Physics, vol. 13, Apr. 1975, pp. 254-257. Pohlack et al, "Induced Resonance Absorption in Thin Films" SPIE v.1782 Thin Films for Optical Systems (1992) p122. Hacker et al, "Structure-Properties Relationships in Optical Coatings" Physica Scripta v.T49 (1993) p525. |